CH593491A5 - - Google Patents

Info

Publication number
CH593491A5
CH593491A5 CH1626174A CH1626174A CH593491A5 CH 593491 A5 CH593491 A5 CH 593491A5 CH 1626174 A CH1626174 A CH 1626174A CH 1626174 A CH1626174 A CH 1626174A CH 593491 A5 CH593491 A5 CH 593491A5
Authority
CH
Switzerland
Application number
CH1626174A
Original Assignee
Nat Res Dev
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB5649973A external-priority patent/GB1495699A/en
Application filed by Nat Res Dev filed Critical Nat Res Dev
Publication of CH593491A5 publication Critical patent/CH593491A5/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
    • G01N27/68—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using electric discharge to ionise a gas
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
CH1626174A 1973-12-06 1974-12-06 CH593491A5 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5649973A GB1495699A (en) 1973-12-06 1973-12-06 Apparatus and method for sensing particles
GB1837974 1974-04-26

Publications (1)

Publication Number Publication Date
CH593491A5 true CH593491A5 (en) 1977-12-15

Family

ID=26253344

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1626174A CH593491A5 (en) 1973-12-06 1974-12-06

Country Status (2)

Country Link
US (1) US3978397A (en)
CH (1) CH593491A5 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016745A (en) * 1975-04-15 1977-04-12 Westinghouse Electric Corporation Monitoring electrical apparatus against overheating by the use of coating compositions containing thermoparticulatable diazonium salts
FR2528980A1 (en) * 1982-06-17 1983-12-23 Pgep IONIZATION LEVEL DETECTOR OF A GAS MEDIUM CONTROLLED BY ELECTRIC ARC
DE3713473A1 (en) * 1987-04-22 1988-11-10 Intospace Gmbh Liquid-free electrophoresis
US5012195A (en) * 1989-12-28 1991-04-30 Abb Power T&D Company, Inc. Method for improving the electrical strength of vapor-mist dielectrics
EP0820045A3 (en) * 1996-07-18 1999-10-13 Siemens Aktiengesellschaft Ionization type smoke detector
US6964189B2 (en) 2004-02-25 2005-11-15 Westinghouse Savannah River Company, Llc Portable aerosol contaminant extractor
WO2010061327A1 (en) * 2008-11-25 2010-06-03 Koninklijke Philips Electronics N.V. Sensor for sensing airborne particles
US10919047B2 (en) * 2015-09-08 2021-02-16 Rutgers, The State University Of New Jersey Personal electrostatic bioaerosol sampler with high sampling flow rate

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1808709A (en) * 1928-10-18 1931-06-02 United Gas Improvement Co Apparatus for metering gaseous fluids
US2786144A (en) * 1951-12-12 1957-03-19 Socony Mobil Oil Co Inc Method for detecting hydrocarbons in soil gases

Also Published As

Publication number Publication date
US3978397A (en) 1976-08-31

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Legal Events

Date Code Title Description
PUE Assignment

Owner name: BRITISH TECHNOLOGY GROUP LTD

PL Patent ceased